No package is required to write a long right arrow symbol in LaTeX, just use the default command \longrightarrow, the symbol will be printed in the document.
| Symbol/Unicode | Long right arrow/U+27F6 |
|---|---|
| Type of symbol | Mathematics |
| Package (requirement) | No |
| Argument | No |
| Latex command | \longrightarrow |
| Example | \longrightarrow ⟶ |
\documentclass{article}
\begin{document}
$$ A \longrightarrow B $$
$$ P \longrightarrow Q \longrightarrow R $$
$$ 2\textsf{H}_2 + \textsf{O}_2 \longrightarrow 2\textsf{H}_2\textsf{O} $$
\end{document}Output :
